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Zhu Y, Xia B, Xu H, Liu Z, Wang R, Cai Q, Zhao P, Qi Z. Rapid detection of human adenovirus subgroup B using recombinase polymerase amplification assay. Virus Genes 2024; 60:18-24. [PMID: 38175387 DOI: 10.1007/s11262-023-02044-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 11/22/2023] [Indexed: 01/05/2024]
Abstract
Human adenovirus subgroup B (HAdV B) is one of the major pathogens of human respiratory virus infections, which has considerable transmission and morbidity in a variety of populations. Therefore, rapid and specific detection of HAdV B in clinical samples is essential for diagnosis. This study aimed to develop a product for rapid nucleic acid detection of HAdV B using recombinase polymerase amplification assay (RPA) and validate the performance of this method by using clinical samples. Results showed that this method achieved a lower limit of detection (LOD) of 10 copies/μL and had no cross-reactivity with other adenovirus subgroups or respiratory pathogens. In addition to high sensitivity, it can be completed within 30 min at 40 °C. There is no need to perform nucleic acid extraction on clinical samples. Taking qPCR as the gold standard, the RPA assay possessed a high concordance (Cohen's kappa, 0.896; 95% CI 0.808-0.984; P < 0.001), with a sensitivity of 87.80% and a specificity of 100.00%. The RPA assay developed in this study provided a simple and highly specific method, making it an important tool for rapid adenovirus nucleic acid detection and facilitating large-scale population screening in resource-limited settings.
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Affiliation(s)
- Yongzhe Zhu
- Department of Microbiology, Naval Medical University, No. 800, Xiangyin Road, Shanghai, 200433, China
| | - Binghui Xia
- Department of Microbiology, Naval Medical University, No. 800, Xiangyin Road, Shanghai, 200433, China
| | - Haizhou Xu
- Department of Emergency, Changhai Hospital, Naval Medical University, Shanghai, 200433, China
| | - Zengxin Liu
- Genoxor Medical Science and Technology Inc., Shanghai, 201112, China
| | - Ru Wang
- Genoxor Medical Science and Technology Inc., Shanghai, 201112, China
| | - Qingqing Cai
- Genoxor Medical Science and Technology Inc., Shanghai, 201112, China
| | - Ping Zhao
- Department of Microbiology, Naval Medical University, No. 800, Xiangyin Road, Shanghai, 200433, China.
| | - Zhongtian Qi
- Department of Microbiology, Naval Medical University, No. 800, Xiangyin Road, Shanghai, 200433, China.
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Hongdan G, Yao D, Qiang C, Meng H, Xiaorong L, Zhihao X, Dongli M. A multiplex recombinase polymerase amplification assay combined with CRISPR/Cas12a for the detection of respiratory syncytial virus and respiratory adenovirus. J Int Med Res 2024; 52:3000605231223083. [PMID: 38230675 PMCID: PMC10798089 DOI: 10.1177/03000605231223083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 12/11/2023] [Indexed: 01/18/2024] Open
Abstract
OBJECTIVE Respiratory syncytial virus (RSV) and respiratory adenovirus (ADV) are two common pathogens that cause acute respiratory tract infections in children. We aimed to develop a rapid method for detecting both pathogens simultaneously. METHODS The recombinase polymerase isothermal amplification (RPA) method was combined with the CRISPR/Cas detection system. The assay's specificity and sensitivity were explored by designing RPA primers and CRISPR RNAs (crRNAs) through multi-sequence comparisons, optimizing the reaction conditions, and using a fluorescent reading device. The consistency of the test results of 160 clinical pharyngeal swab samples was studied using quantitative polymerase chain reaction (qPCR) results as a comparative control. RESULTS RSV and ADV could be detected at levels as low as 104 copies/mL and 103 copies/mL, respectively, within 50 minutes with no cross-reactivity with other similar pathogens. For the clinical samples, compared with the qPCR method, the sensitivities for RSV and ADV were 98.1% and 91.4%, respectively, and the detection specificities were both 100%. The Kappa values were greater than 0.95, suggesting a high degree of consistency. CONCLUSION This method for detecting RSV and ADV is rapid, sensitive, and specific. It can accurately detect mixed infections in a timely manner, making it suitable for use in areas with scarce healthcare resources.
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Affiliation(s)
- Gao Hongdan
- School of Laboratory Medicine, Bengbu Medical College, Bengbu, Anhui, China
- Institute of Pediatrics, Shenzhen Children’s Hospital, Shenzhen, Guangdong, China
| | - Du Yao
- School of Laboratory Medicine, Bengbu Medical College, Bengbu, Anhui, China
- Institute of Pediatrics, Shenzhen Children’s Hospital, Shenzhen, Guangdong, China
| | - Chai Qiang
- Shenzhen Sea Microbiology Technology Co., Ltd., Shenzhen, Guangdong, China
| | - Huang Meng
- Shenzhen Sea Microbiology Technology Co., Ltd., Shenzhen, Guangdong, China
| | - Liu Xiaorong
- Institute of Pediatrics, Shenzhen Children’s Hospital, Shenzhen, Guangdong, China
| | - Xing Zhihao
- Institute of Pediatrics, Shenzhen Children’s Hospital, Shenzhen, Guangdong, China
| | - Ma Dongli
- School of Laboratory Medicine, Bengbu Medical College, Bengbu, Anhui, China
- Institute of Pediatrics, Shenzhen Children’s Hospital, Shenzhen, Guangdong, China
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Rajbanshi A, Giri P, Laha S, Poddar S. Epidemiology, clinical presentation, and respiratory sequelae of severe adenoviral pneumonia in children admitted in a tertiary care pediatric intensive care unit from Eastern India: A single-center observational study. JOURNAL OF PEDIATRIC CRITICAL CARE 2022. [DOI: 10.4103/jpcc.jpcc_84_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Akello JO, Kamgang R, Barbani MT, Suter-Riniker F, Leib SL, Ramette A. Epidemiology of Human Adenoviruses: A 20-Year Retrospective Observational Study in Hospitalized Patients in Bern, Switzerland. Clin Epidemiol 2020; 12:353-366. [PMID: 32308491 PMCID: PMC7147615 DOI: 10.2147/clep.s246352] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 03/20/2020] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Human adenovirus (HAdV) is an important pathogen seen in clinical practice. Long-term studies may help better understand epidemiological trends and changes in circulating genotypes over time. PURPOSE Using a large biobank of samples from hospitalized, adenovirus-positive patients over a 20-year period, we aimed to analyze long-term epidemiological trends and genotypic relatedness among circulating HAdV strains. METHODS Based on samples from hospitalized patients confirmed to be HAdV positive in Bern, Switzerland, from 1998 to 2017, and on their associated demographic and clinical data, we identified epidemiological trends and risk factors associated with HAdV infection. HAdV genotyping was performed by PCR amplification and sequencing of the hypervariable hexon gene. The obtained sequences were phylogenetically compared with sequences from international HAdV strains. RESULTS HAdV was identified in 1302 samples tested. Cases of HAdV infection were reported throughout the years with no clear seasonality. Upper respiratory tract samples, conjunctivitis swabs, and stool had the highest positivity rate (56.2%, 18.7%, and 14.2% of the cases, respectively). HAdV infection was highest among children ≤4 years old. Increased number of HAdV cases were observed in years 2009 (n = 110) and 2010 (n =112). HAdV8 was the predominant genotype among patients older than 20 years, and was mostly associated with ophthalmic infection. Predominant genotypes among children ≤4 years old were HAdV1, HAdV2, and HAdV3, which were mostly associated with respiratory tract infections. Recurring peaks of increased HAdV cases were evidenced every 4 years among children ≤4 years old. CONCLUSION Our study gives novel insights on long-term epidemiological trends and phylogenetic relatedness among circulating HAdV strains in Switzerland, country in which little data on HAdV prevalence and diversity was so far available.
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Affiliation(s)
- Joyce Odeke Akello
- Institute for Infectious Diseases, University of Bern, Bern, Switzerland
- Biology Division, Spiez Laboratory, Swiss Federal Office for Civil Protection, Spiez, Switzerland
- Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Richard Kamgang
- Institute for Infectious Diseases, University of Bern, Bern, Switzerland
| | | | | | - Stephen L Leib
- Institute for Infectious Diseases, University of Bern, Bern, Switzerland
| | - Alban Ramette
- Institute for Infectious Diseases, University of Bern, Bern, Switzerland
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Dou Y, Li Y, Ma C, Zhu H, Du J, Liu H, Liu Q, Chen R, Tan Y. Rapid diagnosis of human adenovirus B, C and E in the respiratory tract using multiplex quantitative polymerase chain reaction. Mol Med Rep 2018; 18:2889-2897. [PMID: 30015894 PMCID: PMC6102718 DOI: 10.3892/mmr.2018.9253] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 06/28/2018] [Indexed: 01/10/2023] Open
Abstract
Human adenovirus (HAdV) is increasingly recognized as a major cause of human respiratory tract viral infections. Its outbreaks and epidemics in various populations resulted in considerable morbidity and mortality. Therefore, a rapid and specific assay for HAdV in clinical samples is of crucial importance to diagnosing HAdV infections. The present study aimed to develop and evaluate a multiplex quantitative polymerase chain reaction (qPCR) assay for the rapid detection and accurate quantification of HAdV B, C and E. The lower limit of detection for this assay was two genomic copies per reaction, and quantitative linearity ranged from 2 to 2×106 copies per reaction of the input viral DNA. Furthermore, 3,160 throat swab samples that tested HAdV negative by the immunofluorescence assay were collected and retested using the multiplex qPCR assay. The results showed that 2,906 samples were HAdV negative and the other 254 samples were HAdV positive. The HAdV species identified included B (184 samples), C (51 samples), and E (39 samples). Among the three HAdV species, HAdV B and E were detected from 8 samples, and HAdV C and E were detected from other 12 samples. The overall results demonstrated that the sensitivity and specificity of the proposed assay were 100% (254/254) and 99.6% (2894/2906), respectively. From the perspective of routine clinical diagnosis, this assay represented a rapid (≤1.5 h) and economic strategy, and had the potential to be used for the rapid and accurate diagnosis of human respiratory infections caused by HAdV B, C and E.
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Affiliation(s)
- Yuhong Dou
- Department of Clinical Laboratory, Shenzhen Shajing Hospital Affiliated of Guangzhou Medical University, Shenzhen, Guangdong 518104, P.R. China
| | - Yuxia Li
- Department of Clinical Laboratory, Shenzhen Shajing Hospital Affiliated of Guangzhou Medical University, Shenzhen, Guangdong 518104, P.R. China
| | - Caifeng Ma
- Department of Clinical Laboratory, Shenzhen Shajing Hospital Affiliated of Guangzhou Medical University, Shenzhen, Guangdong 518104, P.R. China
| | - Huijun Zhu
- Department of Clinical Laboratory, Shenzhen Shajing Hospital Affiliated of Guangzhou Medical University, Shenzhen, Guangdong 518104, P.R. China
| | - Jikun Du
- Department of Clinical Laboratory, Shenzhen Shajing Hospital Affiliated of Guangzhou Medical University, Shenzhen, Guangdong 518104, P.R. China
| | - Helu Liu
- Department of Clinical Laboratory, Shenzhen Shajing Hospital Affiliated of Guangzhou Medical University, Shenzhen, Guangdong 518104, P.R. China
| | - Qiong Liu
- Department of Clinical Laboratory, Shenzhen Shajing Hospital Affiliated of Guangzhou Medical University, Shenzhen, Guangdong 518104, P.R. China
| | - Rui Chen
- Department of Clinical Laboratory, The Second People's Hospital of Futian District, Shenzhen, Guangdong 518049, P.R. China
| | - Ying Tan
- Department of Biology, South University of Science and Technology, Shenzhen, Guangdong 518055, P.R. China
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Using record linkage to examine testing patterns for respiratory viruses among children born in Western Australia. Epidemiol Infect 2017; 145:1688-1698. [PMID: 28249635 DOI: 10.1017/s0950268817000413] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Changes in respiratory pathogen testing can affect disease burden estimates. Using linked data, we describe changes in respiratory virus testing among children born in Western Australia in 1996-2012. We extracted data on respiratory specimens from these children from birth to age 9 years. We estimated testing rates by age, year, Aboriginal status and geographical location. Predictors of testing among children hospitalised at least once before their 10th birthday were identified using logistic regression. We compared detection methods for respiratory viruses from nasal/nasopharyngeal (NP) specimens by age and year. Of 83 199 virology testing records in 2000-2012, 80% were nasal/NP specimens. Infants aged <1 month had the highest testing rates. Testing rates in all children increased over the study period with considerable yearly fluctuations. Among hospitalised children, premature children <32 weeks gestation had over three times the odds of being tested (95% CI 3·47-4·13) than those born at term. Testing using molecular methods increased from 5% to 87% over the study period. Proportion of positive samples increased from 36·3% to 44·4% (P < 0·01); this change was greatest in children aged 2-9 years. These findings will assist in interpreting results from future epidemiology studies assessing the pathogen-specific burden of disease.
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Adenoviruses and acute respiratory infections in children living in an equatorial area of Brazil. Epidemiol Infect 2015; 144:355-62. [DOI: 10.1017/s0950268815000916] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
SUMMARYHuman adenoviruses (HAdVs) are important respiratory pathogens, found in 2–27% of acute respiratory infection (ARI) cases. Few studies have analysed the diversity of species and types of HAdVs associated with ARI in Brazil. The purpose of this study was to determine the circulation patterns of the different HAdV species and respective types associated with ARI in children in the city of Fortaleza, northeastern Brazil. HAdVs were screened by an indirect immunofluorescence assay, and subsequently identified as species and types by PCR and sequencing of the hexon gene (HVR1–HVR6). Between 2001 and 2013, a total of 290 HAdV strains were detected, 190 of which were identified as belonging to the HAdV-B, -C and -E species. Seven types of HAdVs circulated in the studied population during the analysed period, with HAdV-3 being predominant.
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Foong Ng K, Kee Tan K, Hong Ng B, Nair P, Ying Gan W. Epidemiology of adenovirus respiratory infections among hospitalized children in Seremban, Malaysia. Trans R Soc Trop Med Hyg 2015; 109:433-9. [PMID: 26038572 DOI: 10.1093/trstmh/trv042] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 05/06/2015] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND There is scarcity of data regarding epidemiology and clinical aspects of human adenovirus acute respiratory infection (ARI) among children in developing countries. METHODS Retrospective data on demographics, clinical presentation, outcomes and laboratory findings of 116 children admitted into Tuanku Jaafar Hospital in Seremban, Malaysia from 2012 to 2013 with documented diagnosis of community-acquired adenovirus ARI were collected and analyzed. RESULTS Male to female ratio was 1.70. Median age was 14 (1-107) months. The commonest symptoms were fever (94.8%; 110/116), cough (82.8%, 96), rhinorrhea (63.8%; 74), interrupted feeding (66.4%; 77), diarrhea (33.6%; 39) and conjunctivitis (21.6%; 25). Mean temperature on admission was 38.4°C±0.9°C. Among all 116 subjects, 20.7% (24) needed oxygen supplementation, 57.8% (67) required intravenous hydration, 11.2% (13) were admitted into the pediatric intensive care unit and 6.9% (8) required mechanical ventilation. Only 1% (1/87) had positive blood culture (Streptococcus pneumoniae) among 87 who received antibiotic treatment. Case fatality rate was 2.6% (3/116) and 1.7% (2/116) developed bronchiolitis obliterans. Median length of hospital stay was 4 (1-50) days. CONCLUSION Adenovirus ARI caused significant morbidity and substantial resource utilization among hospitalized Malaysian children. It should be considered in the differential diagnosis of infants below two years presenting with ARI associated with high fever. Antibiotics should not be prescribed as secondary bacterial infections are uncommon.
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Affiliation(s)
- Khuen Foong Ng
- Pediatric Department, Tuanku Jaafar Hospital, 70300 Seremban, Malaysia
| | - Kah Kee Tan
- Pediatric Department, Tuanku Jaafar Hospital, 70300 Seremban, Malaysia
| | - Boon Hong Ng
- Pediatric Department, Tuanku Jaafar Hospital, 70300 Seremban, Malaysia
| | - Pritiss Nair
- Pediatric Department, Tuanku Jaafar Hospital, 70300 Seremban, Malaysia
| | - Wan Ying Gan
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43300 Serdang, Malaysia
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Puerari D, Camargo C, Gratura S, Watanabe ASA, Granato C, Bellei NCJ. [Application of molecular assay for adenovirus detection among different pediatric patients]. REVISTA PAULISTA DE PEDIATRIA 2015; 33:136-41. [PMID: 25890444 PMCID: PMC4516365 DOI: 10.1016/j.rpped.2014.09.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 09/22/2014] [Indexed: 11/29/2022]
Abstract
OBJECTIVE: Adenoviruses play an important role in the etiology of severe acute lower
respiratory infection, especially in young children. The aim of the present study
was to evaluate the Human Adenovirus (HAdV) detection by different methods (Direct
Fluorescence Assay DFA and Nested Polymerase Chain Reaction nested PCR), among
samples collected from different groups of pediatric patients. METHODS: Collection of samples was made in children with congenital heart disease (CHD 123
nasal aspirates collected in the years of 2005, 2007 and 2008) and in community
children (CC 165 nasal aspirates collected in 2008). Children were eligible if
they presented acute respiratory infection (ARI) of probable viral etiology,
within up to 7 days of symptoms' onset. All studied samples were evaluated by DFA
and nested PCR assay. RESULTS: Of the 290 samples included during the study period, 43 (14.8%) were positive on
at least one test: 17/165 (10.3%) of the CC and 26/125 (20.8%) of the CHD
children. The nested PCR detection rates in the community children were 15/165
(9.1%), and for children with CHD, 24/125 (19.2%). Molecular method showed higher
detection rates when compared to the DFA test (p<0.001).
Univariate analysis showed that children with congenital heart disease presented a
significantly higher chance for acquiring the HAdV (Odds Ratio 2.3; 95% CI:
1.18-4.43). CONCLUSIONS: Based on data obtained in the present evaluation, we suggest that a routine
surveillance should be performed in high risk patients by molecular methods, thus
improving diagnostic flow and efficiency.
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Affiliation(s)
- Diane Puerari
- Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
| | - Clarice Camargo
- Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
| | - Sandra Gratura
- Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
| | | | - Celso Granato
- Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
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Poor outcome of acute respiratory infection in young children with underlying health condition in Brazil. Int J Infect Dis 2015; 34:3-7. [PMID: 25747778 PMCID: PMC7172962 DOI: 10.1016/j.ijid.2015.03.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Revised: 02/28/2015] [Accepted: 03/02/2015] [Indexed: 01/29/2023] Open
Abstract
Objectives It is well established that respiratory viruses are an important cause of hospitalizations in young children worldwide, but data are limited on the contribution of specific viruses to severe illness in South America. We describe clinical and laboratory findings from prospective surveillance for acute respiratory infections at a tertiary hospital in São Paulo, Brazil. Methods We screened children < 2 years old with acute respiratory tract infections admitted to an urban tertiary hospital for respiratory viruses from March 2008 through February 2010, using polymerase chain reaction assays. Results Respiratory viruses were identified in 378 (53%) of the 715 samples analyzed. Respiratory syncytial virus was the most commonly identified virus (52%), followed by adenovirus (27%) and Human metapneumovirus (12%). More than one virus was identified in 19% of specimens. Almost half of the samples (46%) were from children with underlying health conditions. We demonstrated that compared to the previously healthy group, those with comorbidities had a worse outcome in terms of severity, with prolonged hospital stay and more need of intensive care. Conclusion Identification of this high-risk population along with strategies for fast diagnosis might each help to reduce morbidity and mortality in this group.
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Marcone DN, Carballal G, Ricarte C, Echavarria M. [Respiratory viral diagnosis by using an automated system of multiplex PCR (FilmArray) compared to conventional methods]. Rev Argent Microbiol 2015; 47:29-35. [PMID: 25735216 PMCID: PMC7131815 DOI: 10.1016/j.ram.2014.12.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2014] [Revised: 12/23/2014] [Accepted: 12/29/2014] [Indexed: 02/04/2023] Open
Abstract
Las infecciones respiratorias agudas producen una importante morbimortalidad y comúnmente son causadas por virus. En Argentina, los programas de vigilancia epidemiológica se basan en la detección de antígenos virales por inmunofluorescencia (IF), aunque es bien conocido que los métodos moleculares son más sensibles. El panel respiratorio (PR) FilmArray (PR-FilmArray) es un equipo comercial automatizado de PCR múltiples que detecta 17 virus respiratorios y 3 bacterias, en un sistema cerrado que requiere 5 min de procesamiento y una 1 h de instrumentación. Se evaluó un total de 315 muestras respiratorias de niños menores de 6 años con infecciones respiratorias agudas por IF para 8 virus respiratorios y por RT-PCR para rinovirus. Posteriormente, estas muestras se estudiaron con el PR-FilmArray. La frecuencia de positividad al considerar los 9 virus estudiados por IF y RT-PCR fue del 75 %; por PR-FilmArray fue del 92 %. El porcentaje de acuerdo positivo entre ambas metodologías fue del 70,5 % y el de acuerdo negativo fue del 99,6 % (intervalo de confianza 95 %: 65,5-75,1 y 99,2-99,8, respectivamente). El PR-FilmArray permitió obtener un mayor diagnóstico positivo (97 %) y detectó otros virus, como los coronavirus NL63, 229E, OC43 y HKU1 (10 %) y los bocavirus (18 %). Además, permitió identificar coinfecciones múltiples (39 %) con 2, 3, 4 y hasta 5 virus. Actualmente, la IF continúa siendo el método más utilizado en los países latinoamericanos para el diagnóstico de virus respiratorios por su bajo costo, por su capacidad para procesar un alto número de muestras simultáneamente y porque los resultados de los virus más frecuentes están disponibles en 5 h. Sin embargo, la futura incorporación de métodos moleculares aumentaría notablemente la capacidad diagnóstica.
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Affiliation(s)
- Débora N Marcone
- Unidad de Virología (UNVIR-CONICET) y Laboratorio de Virología Clínica, Centro de Educación Médica e Investigaciones Clínicas Norberto Quirno (CEMIC), Hospital Universitario, Ciudad Autónoma de Buenos Aires (CABA), Argentina
| | - Guadalupe Carballal
- Unidad de Virología (UNVIR-CONICET) y Laboratorio de Virología Clínica, Centro de Educación Médica e Investigaciones Clínicas Norberto Quirno (CEMIC), Hospital Universitario, Ciudad Autónoma de Buenos Aires (CABA), Argentina
| | - Carmen Ricarte
- Unidad de Virología (UNVIR-CONICET) y Laboratorio de Virología Clínica, Centro de Educación Médica e Investigaciones Clínicas Norberto Quirno (CEMIC), Hospital Universitario, Ciudad Autónoma de Buenos Aires (CABA), Argentina
| | - Marcela Echavarria
- Unidad de Virología (UNVIR-CONICET) y Laboratorio de Virología Clínica, Centro de Educación Médica e Investigaciones Clínicas Norberto Quirno (CEMIC), Hospital Universitario, Ciudad Autónoma de Buenos Aires (CABA), Argentina.
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Raboni SM, Damasio GAC, Ferreira CEO, Pereira LA, Nogueira MB, Vidal LR, Cruz CR, Almeida SM. Acute gastroenteritis and enteric viruses in hospitalised children in southern Brazil: aetiology, seasonality and clinical outcomes. Mem Inst Oswaldo Cruz 2014; 109:428-35. [PMID: 25075782 PMCID: PMC4155843 DOI: 10.1590/0074-0276140066] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Accepted: 05/22/2014] [Indexed: 02/01/2023] Open
Abstract
Viral acute gastroenteritis (AG) is a significant cause of hospitalisation in children younger than five years. Group A rotavirus (RVA) is responsible for 30% of these cases. Following the introduction of RVA immunisation in Brazil in 2006, a decreased circulation of this virus has been observed. However, AG remains an important cause of hospitalisation of paediatric patients and only limited data are available regarding the role of other enteric viruses in these cases. We conducted a prospective study of paediatric patients hospitalised for AG. Stool samples were collected to investigate human adenovirus (HAdV), RVA, norovirus (NoV) and astrovirus (AstV). NoV typing was performed by nucleotide sequencing and phylogenetic analysis. From the 225 samples tested, 60 (26%) were positive for at least one viral agent. HAdV, NoV, RVA and AstV were detected in 16%, 8%, 6% and 0% of the samples, respectively. Mixed infections were found in nine patients: HAdV/RVA (5), HAdV/NoV (3) and HAdV/NoV/RVA (1). The frequency of fever and lymphocytosis was significantly higher in virus-infected patients. Phylogenetic analysis of NoV indicated that all of these viruses belonged to genotype GII.4. The significant frequency of these pathogens in patients with AG highlights the need to routinely implement laboratory investigations.
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Affiliation(s)
- Sonia Maria Raboni
- Laboratório de Virologia, Hospital de Clínicas
- Departamento de Doenças Infecciosas
| | | | - Carla EO Ferreira
- Programa de Pós-Graduação em Microbiologia, Parasitologia e
Patologia
| | | | | | | | - Cristina R Cruz
- Departamento de Pediatria, Universidade Federal do Paraná, Curitiba,
PR, Brasil
| | - Sergio M Almeida
- Laboratório de Virologia, Hospital de Clínicas
- Faculdades e Instituto de Pesquisa Pelé Pequeno Príncipe, Complexo
Pequeno Príncipe, Curitiba, PR, Brasil
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Manji R, Zheng X, Patel A, Kowerska M, Vossinas M, Drain A, Todd KM, Lenny N, DeVincenzo JP, Ginocchio CC. Multi-center evaluation of the adenovirus R-gene US assay for the detection of adenovirus in respiratory samples. J Clin Virol 2014; 60:90-5. [DOI: 10.1016/j.jcv.2014.03.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 03/15/2014] [Accepted: 03/19/2014] [Indexed: 10/25/2022]
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Detection of Adenovirus Infection Among Children With Acute Respiratory Disease During 2010-2012 in Shiraz, Iran. ARCHIVES OF PEDIATRIC INFECTIOUS DISEASES 2014. [DOI: 10.5812/pedinfect.15930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Clinical and epidemiological aspects related to the detection of adenovirus or respiratory syncytial virus in infants hospitalized for acute lower respiratory tract infection. JORNAL DE PEDIATRIA (VERSÃO EM PORTUGUÊS) 2014. [DOI: 10.1016/j.jpedp.2013.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Ferone EA, Berezin EN, Durigon GS, Finelli C, Felício MCC, Storni JG, Durigon EL, Oliveira DBLD. Clinical and epidemiological aspects related to the detection of adenovirus or respiratory syncytial virus in infants hospitalized for acute lower respiratory tract infection. J Pediatr (Rio J) 2014; 90:42-9. [PMID: 24148797 DOI: 10.1016/j.jped.2013.05.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Accepted: 05/27/2013] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE To characterize and compare clinical, epidemiological, and laboratory aspects of infants with acute lower respiratory infection (ALRI) associated with the detection of adenovirus (ADV) or respiratory syncytial virus (RSV). METHODS A preliminary respiratory infection surveillance study collected samples of nasopharyngeal aspirate (NPA) for viral research, linked to the completion of a standard protocol, from children younger than two years admitted to a university hospital with ALRI, between March of 2008 and August of 2011. Polymerase chain reaction (PCR) was used for eight viruses: ADV, RSV, metapneumovirus, Parainfluenza 1, 2, and 3, and Influenza A and B. Cases with NPA collected during the first 24 hours of admission, negative results of blood culture, and exclusive detection of ADV (Gadv group) or RSV (Grsv group) were selected for comparisons. RESULTS The preliminary study included collection of 1,121 samples of NPA, 813 collected in the first 24 hours of admission, of which 50.3% were positive for at least one virus; RSV was identified in 27.3% of cases surveyed, and ADV was identified in 15.8%. Among the aspects analyzed in the Gadv (n = 58) and Grsv (n = 134) groups, the following are noteworthy: the higher mean age, more frequent prescription of antibiotics, and the highest median of total white blood cell count and C-reactive protein values in Gadv. CONCLUSIONS PCR can detect persistent/latent forms of ADV, an aspect to be considered when interpreting results. Additional studies with quantitative diagnostic techniques could elucidate the importance of the high frequency observed.
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Affiliation(s)
- Eduardo A Ferone
- Pediatric Pneumology Unit, Department of Pediatrics and Child Care, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo, SP, Brazil.
| | - Eitan N Berezin
- Pediatric Pneumology Unit, Department of Pediatrics and Child Care, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo, SP, Brazil; Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, SP, Brazil
| | - Giuliana S Durigon
- Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, SP, Brazil
| | - Cristiane Finelli
- Emergency Unit, Department of Pediatrics and Child Care, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo, SP, Brazil
| | - Maria C C Felício
- Emergency Unit, Department of Pediatrics and Child Care, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo, SP, Brazil
| | - Juliana G Storni
- Pneumo-Functional Physical Therapy, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo, SP, Brazil
| | - Edison L Durigon
- Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
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Watanabe A, Carraro E, Camargo C, Puerari D, Guatura S, Granato C, Bellei N. Human adenovirus detection among immunocompetent and immunocompromised patients presenting acute respiratory infection. Rev Soc Bras Med Trop 2013; 46:161-5. [DOI: 10.1590/0037-8682-1699-2013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Accepted: 03/14/2013] [Indexed: 11/21/2022] Open
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Ampuero JS, Ocaña V, Gómez J, Gamero ME, Garcia J, Halsey ES, Laguna-Torres VA. Adenovirus respiratory tract infections in Peru. PLoS One 2012; 7:e46898. [PMID: 23056519 PMCID: PMC3466214 DOI: 10.1371/journal.pone.0046898] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Accepted: 09/06/2012] [Indexed: 12/13/2022] Open
Abstract
Background Currently, there is a paucity of data regarding human adenovirus (HAdv) circulation in Andean regions of South America. To address this shortcoming, we report the clinical, phylogenetic, and epidemiologic characteristics of HAdv respiratory tract infection from a large sentinel surveillance study conducted among adults and children in Peru. Methods/Principal Findings Oropharyngeal swabs were collected from participants visiting any of 38 participating health centers, and viral pathogens were identified by immunofluorescence assay in cell culture. In addition, molecular characterization was performed on 226 randomly selected HAdv samples. Between 2000 and 2010, a total of 26,375 participants with influenza-like illness (ILI) or severe acute respiratory infection (SARI) were enrolled in the study. HAdv infection was identified in 2.5% of cases and represented 6.2% of all viral pathogens. Co-infection with a heterologous virus was found in 15.5% of HAdv cases. HAdv infection was largely confined to children under the age of 15, representing 88.6% of HAdv cases identified. No clinical characteristics were found to significantly distinguish HAdv infection from other respiratory viruses. Geographically, HAdv infections were more common in sites from the arid coastal regions than in the jungle or highland regions. Co-circulation of subgroups B and C was observed each year between 2006 and 2010, but no clear seasonal patterns of transmission were detected. Conclusions/Significance HAdv accounted for a significant fraction of those presenting with ILI and SARI in Peru and tended to affect the younger population disproportionately. Longitudinal studies will help better characterize the clinical course of patients with HAdv in Peru, as well as determine the role of co-infections in the evolution of illness.
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Real-time qualitative PCR for 57 human adenovirus types from multiple specimen sources. J Clin Microbiol 2011; 50:766-71. [PMID: 22170906 DOI: 10.1128/jcm.05629-11] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Human adenoviruses (HAdVs) are ubiquitous double-stranded DNA viruses that cause a wide array of diseases in humans including pharyngitis, pneumonia, gastroenteritis, hemorrhagic cystitis, and keratoconjunctivitis. They also cause life-threatening opportunistic infections in immunocompromised individuals and are responsible for outbreaks in certain populations. Diagnosis is traditionally by cell culture or antigen detection methods. However, some HAdVs can take up to 4 weeks to isolate, and diarrheagenic types 40 and 41 will not grow in routine cell culture. Therefore, the goal of this study was to design a rapid, real-time PCR assay to detect all known 57 HAdV types from multiple different specimen sources. Primers and fluorescence resonance energy transfer hybridization probes were designed to target a 185-bp region of the penton base gene of HAdV. The analytical sensitivity was determined to be 10 copies/μl for HAdV types showing exact primer/probe homology in specimen matrix. Using whole-virus strains, the analytical sensitivity for representative HAdV types ranged from 10(-1) to 10(3) 50% tissue culture infective dose (TCID(50))/ml. The assay demonstrated 100% sensitivity and 99% specificity. This real-time PCR assay provides a rapid method for the detection of all 57 known HAdV types from respiratory specimens, blood, stool, urine, and ocular swabs.
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